Page 269 - Complete Wireless Design

Frequency Synthesizer Design

268 Chapter Five

5 V
CC 5 V
CC
0.1
f 1
f
0.1
f 1
f
80nH
80nH
100 pf .01
f MICROWAVE PLL 100 pf .01
f
REFERENCE P7 P15 P10 P16
OSCILLATOR
CHARGE
5 V PUMP
CC
0.1
f .01
f
3RD ORDER LOOP FILTER
50nH
5.4K*
100 pf OHMS
P8 PRESCALER RCOUNTER REF PHASE P2
1/1 1/10 IN DIFF
OUT
1000 pf COUNTER
IN 2.5nf 65nf 250pf
1mA/2PI
RADIANS
618*
OHMS
VECTRON
CO-411
CMOS CLOCK
10MHz
+/– 1 PPM STABILITY
PROGRAMMABLE NCOUNTER
1/990 TO 1/1920 DUAL MODULAS PRESCALER P6
32
MEAN AVERAGE 1414 MHz
NATIONAL LMX2326
P1 P14 P11 P13 P12 P3 P4 P5 P9
100 pf
N/C N/C CLOCK LE DATA
N DIVIDE CONTROL (CHANNEL SELECT)
Figure 5.10 A complete microwave PLL for wideband tuning applications.

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